Oil burner



July 9, 1929. J. w. MowBRAY OIL BURNER Filed Feb. 9, 1925 2 Sheets-SheetJNVENTOR. I .l/nes M Nan/b@ M famr ATTORNEY.

July 9, 1929. '.J. w. MQWBRAY OIL BURNER Filed Feb. 9, 1925 2Sheets-Sheet 2 l INVENTOR. f/nes h/. /Vwmd ATTORNE.

Patented `luly 9, 1929.

unirse sir-Aras PAIE-Nr yerr-rca;

JAMES W. MoWBn-AY, or DETROIT, MICHIGAN, Assronon'ro oIrA'nns E.WIsN-En, o1` DETROIT; IvIICn'rotan.`A

oIn BURNER.

Application filed February 9, 1925. Serial No. 7,746.-

This invent-ion relates to oil burners, and the object is to provide animproved burner `for the burning oi a liquid hydro-carbon fuel forheatingl purposes either in stoves or ranges or more particularly inheating furnaces` of any typev such as steam, hot water andv hot airheating` furnaces.

The burner is of that type in which oil is sprayed or discharged from a.nozzle in line streams and air by means of a.' rotating fan dischargedthrough the streams tobre-ak and distribute the saine and provide oxygenfor combustion.l

vOne of'the principal features of this invention is in the provisionofIa stationary apertured burning,- plate on to and vover which the oil isdischai ged by the nozzles and thi-(nigh which the air is forced by thefan.

An additional and principal feature in conjunction with the. burning`plate is in the provision of a moist air to the burning plate to providesome amount of steam to maintain the surface of the plate clean orcomparatively clean.

A further feature ol the invention is in the provision of a. fan belowa` burning plate and a water turbine for rotating the fan, the saidwater turbine lying in the air passage. leadincr to the fan whereby airllowing to the burning plate through operation of the fan passes throughthe spray produced in the driving of the fau by awator jet ashereinafter described.

lt is also an object of this invention t-o provide a construction inwhich the air is heated it passes to the air passageway and thus tendsto vaporize water through which it passes.

An additional object of the'invention is to provide a. very simple andinexpensive construction enabling',r t-heburner to be practicallycompletely disassembled in the furnace or other heating appliancewithoutdisturbingl the oil and4 water connections or other piping connectedwith the burner thus enabling every necessary part of the burner to bereadily taken out' and examined or cleaned and replaced withoutnecessity of any line adjustment of any part. By such construction anunskilled person may assemble or disasseluble the' device Wit-houtpossibility of arranging" the parts in other than their requiredrelationship foi* Qtteetivc op eration.-

A burner embodying my improved feas tures oi construction is Shown initsfpreterred form in the accompanying drawings in which- Fing-1 is aplan-view of an oil burner einbodying my invention.

Fig. 2 isa vertical section thereof taken on line 2*-2 of Fig. 1.

Fig. 3 is a detail showing the turbine blades. y

Fig.. 4.- is ,a detail showing an alternative formi of" the burningplate.

The burner is best understood fromv an examination of Fig: -2 innvhich 1indicates thevbase which is of afhowl like form provid-4 ed' witlr a,centralthroaded bossi 2 ign the bottom and* another;v similar fthreaded: bOSS 3 at one side thereoii and a thirdboss llfwith which anoutlet pipe lniay be connected; 'lille central boss 2 is threaded toreceive 'an oil supply conduit (not here shown)- and the boss 3-isthreaded to receive afwater supply 4connection' or piping'tnot hereshown). The sidewalls of the bowl are preferably outwardly flared tbaslight extent and at a. little distance from the bottom is provided withan interiorrib `(-3 on which is supported the cylindricalmeinber 7vprovidimg a combustion chamber. As Iwill be understood from Fig. '1.this member 7 has a series of radial ribsS extending longitudinally ofthe member, and these ribs serve to properly space'thecylindr'icalmember?` in the bowl in assembling the parts with the `lowerends of the outer corners' of the ribs. resting on the rib or shoulder 6of the bowll' The space between tih'ebovvly 1l andmember 7 provides a.circular air inlet or passageway. Prefer ablyfthereis ascreen 9-lyingron the bosses 2 and 3 as willi be seen from Fig.' 2. The nozleltlrand the oil-conduit 11 are secured tothe inner ends of theerespective bosses 3 and 2.- `This screen is used to prevent carbonfron'ipaing down into the outlet 4 but if asutiieiently largediameteroutlet is pro vided the screen may be dispensed with. The oillconduit or stein 11 has a longitudinal bore 12 lfor the oil and thisstem is reduced in diameter providing a flat ended portion 13 at theupper' end less in diameter than the stem. Rotatable on this steiny isthe fan 14 and turbine 15 having a central bod which is boredoigruundto't the stem if. This central body member is madset two partelaats-between which is secured-the fan -mem` ber 14. This fan has acentralfaperture practically fitting over the portion 15c and isprovided with a series of radial plates so turned that on revolution ofthe member air will be forced upward inthe member 7 and through theburning plate 17 hereinafter described. This member 15Jv at the vupperend=hasa ball 1S seated in theend of the central borewhich is preferablya press tit therein so that it will not fallout on removal of theturbine and fan 'portion from the stem 11. This ball rides on the flatupper endof the portion 13 thus providing aiball bearing for the fan andturbine. There 'also a series ot' apertures 19 extending on radial linesfrom the center .of revolution of the member 15". The reduced 'end 13 ofthe stem provides a chamber 2() into .which the apertures 19 lead andthis chamber receives oil from the conduit or bore 12 which'opens intothe chamber 2() through thecrossconduit 21V-in the part '13. `The oilisfed through the line '12 from ai supply receptacle which shouldbelocatedf` about 'four or lfive inches above the apertures '19 toplroducesut ticient pressure tol cause the oil "passing through the apertures tobe forced out over the burning plate 17in1tine-streams or sprays. Themember 15a driven at a comparatively high rate ofspeed by the waterturbine and this also tends to throw the oill and spray it over theplate17.

'.lhe plate 17 as shown in Fig. 2, is slightly saucer shaped and has acentral aperture 22 through which the upper end of the portion 15"extends so that the apertures 19 are above the plate. -This upperend'ofthe member 15b in connection with the apertures'f) is hereinafter calleda nozzle but it is'to be understood that there are preferably severalapertures positioned radially about this head. The plate 17 has aconsiderable number of apertures 23 formed therein which provide for thepassage of air into the oil spray and the burning ot' the oil takesplace on this plate and above the same.v `'FhepIateA may, as shown inFig. 2, rest with the outer edges on lugs 24 provided inthe inner Wallsof the member 7, which walls extend above the burning plateprovidingwhat may betermed a. combustion chamber. By rapid rotation of the fanair is forced through the plate to mix with the oil spray and causes theflame to take a spiral formespecially when the walls of the memberextend above the burning plate as shown in Fig 2. The plate 17 isstationary and this is one ofthe principal features of the invention.

I am aware of burners of this type in which a rotating disk is providedas shown for instance in the U. S. patent to lV. E. Gibbs No, 752,990 ofFebruary 23, 1904. In such previous types in which a rotating disk isemployed there is an accumulation of car bon on the disk and upon thewallsl of the chamberin which the disk is rotated. I have assumed thatthe reason for the accumulation of carbon on the disk is that by reasonof its rapid rotation there is a tendency to cool the plate. There isalso, due to the throwing of the oil from the disk by ccntrifugal'forceinto contact with the. side walls of the combustion chamber. a tendencyto pile up oil that is not in sufficiently thin film or nflixedavitha'iradequately to burn cleanly. lVith a stationary plate there is aperfectly equa'ble distribution ot the oil over the plateras the nozzleis rotated rapidly relative to the plate. The plate, 17 is slightlysaucerv shaped so that the. periphery is .slightly above the level ofthe oil apertures of the nozzle. The oil therefore docs not spray overthe edge ofthe plate nor provide a sufficient body of oil at any onepoint to burn in such manner as'to leave a rapidly accumulating carbondeposit.

I am also' aware of a type of oil burner in whicharotating apertureddisk is provided fora burning plate. Such rotating disk also tends toaccumulate carbon indicating that the oil is not thoroughly consumed andthat the lighter constitutents of the oil vaporize leavmg the heavierconstituents burning to a. carbon on the plate. The. rotating disk isinadequate for the purpose b v reason of this accumulation of carbon andso far as l have been able to determine this aci-.umm lation ,of carbonis due largely to the fact. that the` movement of the dish is at thelspeed of movement ot' the fan producing the air flow through it.

lVith my improved apparatus utilizing a stationary apertured plate afterthe mamier indicated in Fig. 1 or the alternate torni shownin Fig. 4,the flow of air is across the oil streams which serves to break up theoil streams and produce a proper combustion. Y'Vhile this plate isstationary in my device, the air flow tends to move in a spiral formcausing the air to travel along the upper surface of the plate to someextent. The air flowing through the apertures of the plate therefore isnot straight upward parallel with the axis of rotation of the fan but tosome extent lin the-direction of rotation of the fan apparently in useat an a ogle of thirty to .forty degrees to the vertical. The plateshown in Fig. l lits comparatively closely to the side walls of thecylinder 7, there being just sutlieient space to allow the platetoexpand under heat but this space is preferably maintained at a minimumto pre vent an air flow about the edge of the plate which tends toconcentrate the flame above. The greatest efficiency is secured byhaving llll ifmeogerzfi the' flamespread out to some extent and thestation-ary platel secures this result particularly if there is littleorf noair space between the edge 4of the `plate andthe wall 7. lnthealtei-native liorm ot construction shown in F ig. 4,* the plate seatson the top ot the wall.' 7 and? extends outwardly therefrom a shortdista-nee which ytends Ato cause the llame to bush outlito'ain extenteven greater than is the case with: the torni shown in Fig. 2; li-theitherv form of plate the outer edgeot the plate islabove the level oftheoil apertures V19 so that' there is no disch-arge of oilhorizontallyrolli"trom the plate as the .oi-l1 streams strike the-plate`soinewluirc near the periphery dependingupon the head of oit and anyoil that is not broken up and discharged upwardly by the air flow tailson the surface of the plateand, due to the saucer-hike'l form o'f theplate, lends to flow towardithe center of the plate. This causes theoil-to be distributed in a thin lilm and the air flow throughtheapertures. and to some extent acrossthe surface ot the plate asheretofore mentioned, mixes with this oil or oil vaporcausing the oil.to be properly eonsumedi` It is to be noted that this plate 17 duringoperation is-hot and therefore any oil in the .forinoi' liquidstrikingthe surface ot the plate ten-ds to be' Vapor-ized and is practicallycompletely consumed and does not forma hard residue on; theA platethrough vaporizationof the' lighter constituents only ot' the oili assullieient oxygen is supplied for practically complete combustion byboth air and water in the manner described.

As heretofore stated the air flow is through the water used in drivingthe lan by means of the turbine 15. The jet of water driving against theblade of the turbine 15 causes it to rotate7 thus rotating the Jfan.This stream issuingl from the nozzle 10 is broken up by the successiveblades in Contact with it and due to the high speed of the turbine isthrown outwardly from the turbine against the lower wall T() o'l' thecyl inder 7 andi tends to falld-ownwardly along this wall into thebottom ol' the bowl 1. Air therefore entering between the bowl and themember 7 passes downward` into the bowl and thence toward' the centerthrough t-he spray falling .from the wall 7" and thence passes upwardlythrough the spray thrown centrifugnlly from the turbine. The air isheated slightly d-ue toits eenling in contact withy the heated wall 7and hns S andthe water spray is heated due to its coming in contactIwith the walls 7 and 7l. The water therefore tends to vaporize and somespray is also drawn upwardly against7 through and onto the burningpla-te 17 by the air flow. This moisture is iininediately converted tosteam on coming in Contact with the plate and flame and assists in thecombustion of the oil and prevents an accumulation of residue ontheplateh One of the principalfeatures et this invention is' in thisprovision of moisture liadeir air and I find it iin-portant in or'der tosecure more vperfect combustion and? prevent an accumulation oli a hardearbon residue on the biu'ningplate which is produced yin yprevious oilburners of this type. lnmy construction whatever carbon is produced inthe burning` of' the oil' is blownout of the burner as the carbon isloose and fluffy in character and does not burn hard on thek plate. Anycarbon that may `fall below thef burning plate will be deposited onthescreen if one is utilized or will pass out through the discharge pipe5.

ln the term ot' plate and member 7 shown in Fig. 2 the flame dischargesupward in a coluu'in ol' va diameter practically equal to that ott-hemember 7 in spira-l form. This is probably due to the llame Abeingl.confined within the upper end of the circular wall 7. lVhen suchwa-llis dispensed with and the lliurning plate 17 extends-outwardlybeyond the exterior ol the member. 7 a short distance and is road-ilyremoved if for any reason-itis desired to take out the lan-'or tomalte a11epair. In both the forms o burning plate shown, the central aperturethrough which extends the part 1f is slightly larger than the said partso that there iis no possibility of the member 15a binding in theburning plate and. therefore is free to rotate onthe stom.

Preferably the stein andy members 15 land 15 are ground to tit closelyand still permit a. free revolution ol': the turbine member. By having.the parts closely fitting'the possibility of leakage of oil between thestein 11 and the parts 15 and-152l is reduced to a minmuuu.

vln theconstruction shown. in Fig. l the l'mruiug plate 1.7 may restdirectly iipon the upper end ol" the wallI 7 corresponding to the wall 7of the form shown in Fig. 2. 'lhis plate is apertured and is providedwith lugs 7" by means oil which it is properly positioned on thecylindrical wall 7a. This plate extends outwardly beyond the peripheryof thewall as shown and is saucer shaped to provide a combustionchamber. There is a further feature in the constructionof this bur-ningplzite shown in Fig. 1- that is, theiupper end of the stem 15 isprovided with an imperforate circular disk 5() which is a press-fitthereon.y below the apertures 19. This disk 5() may be used with eitherof the types of the burning plate shown in Fig. '2er 4:, the said platewhen the disk is used having a central aperture 51 slightly greater indiameter than the plate 50. The l'iurningr plate when used with thedisks V50 is' slightly lower than the disk so that anyoil tending to rundown the side ot the member 15a is thrown out'l over-'the burning plateinto the air flow through the umn about the nozzle head in which thereis no air or very little air for combustion. This arrangement thereforetoa considerable extent prevents combustion at the center causing thecombustion to take place at a distance therefrom over the burning plateand thus prevents to a considerable .extent any aecummulation of carbonon the nozzle.

One of the features of this invention is the ease of assembling ordisassembling the burner parts. The burning plate, as previously stated,is not fastenedin position and may be readily lifted from its place. Theturbine member is simply a sliding tit on the stein and may be liftedtherefrom, the ball. t8 reimiining in position due .to its being a.press tit in t-he recess therefor. The member 7 is readily removed as itmerely rests on the annular ledge 6 and also the screen is readilyremoved as it is not fastened in. place and is apertured to lit over thestem 1l and the water nozzle 10. Thus,by inaking the. parts readilyremovable, all of the parts of the burner are easily cleaned orrepairedand placed back in position without use ot' tools. One of the featuresof this invention is in arranging the parts in this un` attachedrelationship and so constructed as to remain in the set position.

From the foregoing description it will be readily understood that theobjects of the invention are secured by a construction that iseconomical and highly etiicient, the stationary burning plate beingproductive of llame that is an incandescent White in characterthroughout the lower parts thereof changing to a slight orange color at'the tips with no smoky vapor being produced.V This is due to the factthat the. proper amount of air for combustion can be supplied by the fanwhich can be varied inspeed of rotation by means of a valve in the watersupply line (not here shown) but as will be readily understood. i i

The production of carbon is reduced to a minimum by reason of thefacility of supplying the required amount of air together with themoisteningof the air which has a beneieial result in maintaining theburning plate free of carbon deposit and further that, .in supplying airmore or less heated due to its tlow downward over 4the heat radiatingtins of the inner member 7- tends to vaporize the water to some littleextent. This vapor and such moisture as the air will absorb in passingthrough the spray is earried to the burning plate. SomeV of the moistureand spray will strike the under side of the plate and be vaporized bythe heat of the plate and some will pass directly through the aperturesof the plate thusproviding steain mixing with the-oil vapor.

The provision of water in spray form to the air 'body previous to itspassage to the combustion chamber serves a double purpose. The water isat a temperature well below-its boiling point. In fact is comparativelycoldv and, due to the arrangement of the turbine on the oil conduit andthe movement of the air body about the oil conduit and `to Contact withthe burning plate, the oil conduit and lower surface ofthe plate arebathed with a cool water and the: temperature thereof is reduced. Thisprevents distillation ot the oil in the conduit on its-way to thecombustion chamber which, if permit-ted Ato distill in the conduit,would' tend to clog the same by residue. Therefore. in applieantsarrangement the oil-is discharged at atemperature belowI itsdistillationpoint to tho burning plate.: The 'burning plate is also reduced intemperature. By contact of the spray with the plate .steam is producedwhich passes tothe combustion chamber and into the flame.` This is'notsulhcient in quantity to drench the vflame and therefore, due to theexcess heat,` the water is vaporized and through interactionl with theeil produces a. gas which assists in combustion and increases thetemperatur-cof the tlame. Havingthus 4particularly described niyinvention-what I claim and desire to secure by Letters Patent of theUnited States is yl. In an oil burner, a stationary apertured burningplate, means for discharging oil over the surface of theplate, and arotatable fan 'below the plate for forcing air through the apertures ithereof.

2. In an oil burner, a stationary apertured burning plate, a rotatablenozzle having a plurality of apertures for discharging oil in tine,streams over the said plate, and 'a rotatable fan below the plate forforcing air through the'apertures thereof. 3. In van oil burner, astationary apertured blirning plate, an oil discharge nozzle rotatablymounted and discharging oil laterally in Ia plurality of separate tinestreams over the plate, and a blower device for discharging airthroughthe apertures ofthe plate, said aperture providing the main passagewayfor combustion purposes.

4. Inan oil burner, a horizontally positioned stationary burning plateprovided with fa series of apertures therethrough,

means for discharging oil to the upper surface of the said plate insmall streams, and means for forcing air upwardly through the plate,said apertures providing the main passageway for air to the uppersurface of ythe plate.

5. In `an oil burner, a discharge nozzle charging oil;horizontally,.means on Supplying oil ,to the nozzle, 4-a stationaryHipertured burning #plate having a rcentral aperture through which' thenozzle projects, the nozzle discharging oilxi'n'tine streams later-Vail-ly over ythe -said aplate, al fan :connected with-fthe. nozzle, andmeans for-.rotating the `fan and nozzle whereby Aaiir is vtoroed throughlthe lplate` to lnix-ivitli-:a-nd break -up the oil streams.

lG. i[n an oil burner, -a cylindrical shell, a fan `i-otatab'lysupported (therein, means for rotating the fan, o discharge :nozzlerotated with the fan, aneans for supplying oil to the nozzle, astationary apertured burning plate over whiehoilais distributed by thenozzle yand through which practically all air for fthe purpose :ofcombustion is driven :by the fan.

7. Ln 4an oil burner, a lshell or easing through which air is to bepassed, a fan mounted for ,rotation rin Ithe easing, means for rotatingthe same, a rotary discharge nozzle for discharging oil laterally fromthe center .ot theishell, ,a :stationary :apertured :plate over \vliieh.theoil is sprayed by the nozzle and :through `which practically all'.air for the, purpose oteonibustion is driven byL thewxfalu :8.4111 anoi-l burner, a chamber open to atmosphere-.at one.end,vaxtan in ithechainber, .a stationary apertnred plate'pmviding a burning plate aboveithe dfafn iehambelz, theaipertnres ot the plate providingithe mainpassageway for air Yfor combustion purposes, a nozzle rotatable .with:the ifan and disehargingoil streams outwardly Yover the :plate :throughAthe air currents, amd means for introducing moisture iintol the aircurrent previous to its passage to the apertures of the plate. t

9. In .an oil burner, :an -open endedehamber, a fan therein, astationary aportan-'ed plate .formingthe gltpper wall of fthe tanchamber, the plate being spaced slightly trom the upper end of thechamber wall providing ffor an air tlowion :the under side of the plateto beyond its periphery, means ior rotatingthe fan and driving the airtlirongh the apertured plate and the said space between the plate andthe chamber wall, means for providing an oil spray over the said plate,and means Vfor providing a spray of water in the air current previous toits passage through the apertures of the plate for cooling the plate andadding oxygen and hydrogen to the combustion chamber.

10. In an oil burner, a stationary apertured burning plate, means fordistributing oil over the plate in fine streams, a tubular membersupporting the burning plate. a fan in the said member for dischargingair upward therethrough, the tubular member and burning plate being soarranged .that .a lportion of theair currents produced bythe fan aredischarged from the .fan chamber along theain'der :sident-the plate tobeyond its periphery, and means for supplying a spray Aof lwater in ,theair current having 'a temperature below the Vboiling point ofi' .thewater, .the arrangement provid-ing thatthe air ein-rent-earries .thewater in a. sprayA lorm to `Contact with the :plate to Acool the sameand add-oxygen for thepurpo'se ot combustion. .l A

1l. ,In an'oil burneran outer shell `or casing of bowl like form, ashell otl tubularlorm havingitsopen lower end above the bottom of thebowl and spaced from the side walls thereof, astem providing `an oilconduit extending :upward fromthe base centrally of the shell, an oilnozzle having a body rotatably mounted on the stein and provided withlateral apertures at the top in eommunication with the oil conduit,afturbine wheel on ythe said nozzle body, 1neans for direc-ting a jetotwater against ,the .turbine for drivingr the same and rotating the oilnozzle, an apertured .burning plate over which the oil streams are,diseharged by Athe oil nozzle, a fan en thenozzle body rotatable for=dra\wingair through .the water spray and discharging lthe same throughthe apertures .otl the, .burning plate in a direet-iou across the oilstreams.

12. An oil burner comprising a base `of bowl like forno, a hollow stemextending upwardly :trom .the base providing an oil oonduit., a tubularmember in the base support-ed ,above the bottom thereof and having an.open lower end spared tronrthe wall ,of the base providing an airinlet, a revoluble nozzle :member on the stem having lateral aperturesinl the upper end in communiontion witlrtljlieoilconduit.,a tau on thenozzle member by .rotation of which air :is discharged through thetubular aueu'iber,4 a` stationary.burning pla te mounted .above the izniand -liaviinga central aperture through whirh the nozzle rend extends,fthe ,said nozzle vmem-- ber being rotatable with the fan and thelateral apertures discharging oil over the said plate and into the aircurrent passing through the apertures thereof. and means for rotatingthe tan and nozzle member.

13. An oil burner comprising` a base of bowl like form` a hollow stemextending upwardly from the hase providing an oil conduit, a tubularmember supported in the base above the bot-tom thereof and with the openlower end spaced from the wall ol the base providing` an air inlet aboutthe tubular member to the open lower end thereo't'. an oil nozzle havinga body rotatably mounted on the stem and having lateral apertures in theupper end for discharging oil radially therefrom, a turbine. wheel atthe lower end lll() of the oil nozzle body, and within the lower end of'the tubular member, a nozzle for directing streams of Water against theturbine wheel for rotating the oil nozzle and providing water spray inthe lower end of the tubular member, a fan on the said oil nozzle bodyrotatable therewith by means of which air is drawn through the air inletand upward through the water spray, an apertured plate over which theoil streams discharge and through the apertures of which the air currentdischarges in a direction contrary to the direction of iow of the airstreams.

lei. In an oil burner, a cylindrical shell, a fan therein for forcingair therethrough, a rotating discharge nozzle, 'an imperforate disk onthe nozzle below the oil discharge apertures therein, a stationaryburning plate supported by the cylindrical shell having a series ofapertures therein through which air is forced by the fan, the nozzle andimperiforate plate tending to discharge oil over the burning plate andinto the air currents passing therethrough.

15. In an oil burner, a tubular member, a hollow stem extending upwardlytherein providing an oil conduit, a member rotatable on the stem andhaving oil discharge nozzles at its upper end through which oil from theconduit iiows, a plate to which the oil is discharged by the nozzle,means for supplying a current of air to the tubular meinber to dischargeto the combustion chamber, and means for providing a spray of waterhaving a temperature'not greater than its boiling point to the air bodyto be carried thereby into contact with the tubular member and plate toprevent overheating thereof.

16. In an oil burner, a burning plate, a nozzle discharging oil to theplate, means for providing air to mix with the oil and oil vapor of theburning plate to provide a combustible mixture, and means for providinga spray of water at a temperature below the boiling point thereof to theburning plate to reduce its temperature during operations-and providesteam on the combustion side of the burning plate.

17. In an oil burner, a combustion chamber, means for providing oil Jforcombustion in the chamber, means for causing a` flow of air to thechamber, a burning plate in the chamber to the upper side of which theoil is discharged, and means for supplying water having a temperaturenotI greater than its boiling point and in the torm of a inist or sprayto the air current to contact with the under side 4of the burning plateto cool the same and to provide steam in such quantity as to aid incombus- 'tion chamber, and meanst'or supplying a spray .of water lalongthe oil conduit and to the air body thereabout to maintain thetemperature of the conduit below the distillation point of thel oil, thesaid water spray being carriedby the air body to the combustion chamber.

20. In an oil burner, an apertured burning plate, means for dischargingoil to the upper surface of the plate, means for torcing air through'theplate, means for supplying Water in the form ot a spray at a temperaturebelow its boiling point to the air previous to its passing through theapertures of the plate.

In testimony whereof I sign this specific( tion.

-JAIWES W. MOW'BRAY.

